package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.SetmealWithDishMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealWithDishMapper setmealWithDishMapper;

    @Override
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);

        //  在套餐和菜品的关联表插入数据
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmeal.getId());
        });
        setmealWithDishMapper.insertBatch(setmealDishes);
    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        List<SetmealVO> pagelist = setmealMapper.pageQuery(setmealPageQueryDTO);
        Page<SetmealVO> p= (Page<SetmealVO>) pagelist;
        return new PageResult(p.getTotal(),p.getResult());
    }

    @Override
    public SetmealVO getById(Long id) {
        SetmealVO setmealVO = setmealMapper.getById(id);
        if (setmealVO != null) {
            List<SetmealDish> setmealDishes = setmealWithDishMapper.getBySetmealId(id);
            setmealVO.setSetmealDishes(setmealDishes);
            return setmealVO;
        }
        return null;
    }

    @Override
    public void update(SetmealDTO setmealDTO) {
         Setmeal setmeal = new Setmeal();
         BeanUtils.copyProperties(setmealDTO,setmeal);
         setmealMapper.update(setmeal);
         // 删除套餐和菜品的关联数据
         setmealWithDishMapper.deleteBySetmealId(setmealDTO.getId());
         // 重新插入套餐和菜品的关联数据
          List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
          setmealDishes.forEach(setmealDish -> {
              setmealDish.setSetmealId(setmealDTO.getId());
          });
          setmealWithDishMapper.insertBatch(setmealDishes);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }

    @Override
    public void delete(Long[] ids) {
        for (Long id : ids) {
            SetmealVO setmeal = setmealMapper.getById(id);
            if(setmeal.getStatus() == StatusConstant.ENABLE){
                //  起售中的套餐不能删除
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        setmealMapper.delete(ids);
        setmealWithDishMapper.deleteBySetmealIds(ids);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
